GoogleNavigation Framework Reference
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GMSGeometryHeading
extern CLLocationDirection GMSGeometryHeading(CLLocationCoordinate2D from,
CLLocationCoordinate2D to)
Returns the initial heading (degrees clockwise of North) at from of the shortest path to to.
The returned value is in the range [0, 360).
Returns 0 if the two coordinates are the same.
Both coordinates must be valid.
To get the final heading at to one may use (GMSGeometryHeading(to, from) + 180) modulo 360.
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Last updated 2025-08-27 UTC.
[null,null,["Last updated 2025-08-27 UTC."],[[["\u003cp\u003e\u003ccode\u003eGMSGeometryHeading\u003c/code\u003e calculates the initial heading in degrees from one coordinate point to another.\u003c/p\u003e\n"],["\u003cp\u003eThe heading is measured clockwise from North, within the range of 0 to 360 degrees (excluding 360).\u003c/p\u003e\n"],["\u003cp\u003eIf the starting and ending coordinates are identical, the function returns 0.\u003c/p\u003e\n"],["\u003cp\u003eThe final heading at the destination point can be derived by adding 180 degrees to the initial heading from the destination to the starting point and taking the result modulo 360.\u003c/p\u003e\n"],["\u003cp\u003eBoth input coordinates must be valid geographical locations.\u003c/p\u003e\n"]]],[],null,["# GoogleNavigation Framework Reference\n\nGMSGeometryHeading\n==================\n\n extern CLLocationDirection GMSGeometryHeading(CLLocationCoordinate2D from,\n CLLocationCoordinate2D to)\n\nReturns the initial heading (degrees clockwise of North) at `from` of the shortest path to `to`.\n\nThe returned value is in the range \\[0, 360).\n\nReturns 0 if the two coordinates are the same.\n\nBoth coordinates must be valid.\n\nTo get the final heading at `to` one may use (GMSGeometryHeading(`to`, `from`) + 180) modulo 360."]]
